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<div class="title">hello_world_vector.cpp</div>  </div>
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<a href="hello__world__vector_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * This confidential and proprietary software may be used only as</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * authorised by a licensing agreement from ARM Limited</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> *    (C) COPYRIGHT 2013 ARM Limited</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *        ALL RIGHTS RESERVED</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * The entire notice above must be reproduced on all authorised</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * copies and copies may only be made to the extent permitted</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> * by a licensing agreement from ARM Limited.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;</div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="common_8h.html" title="Functions to simplify the use of OpenCL API.">common.h</a>&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="image_8h.html" title="Functions for working with bitmap images.">image.h</a>&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;</div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;CL/cl.h&gt;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &lt;iostream&gt;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="keyword">using namespace </span>std;</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;</div>
<div class="line"><a name="l00026"></a><span class="lineno"><a class="code" href="hello__world__vector_8cpp.html#a840291bc02cba5474a4cb46a9b9566fe">   26</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="64__bit__integer_8cpp.html#a840291bc02cba5474a4cb46a9b9566fe" title="Long data type (64-bit integer) OpenCL example.">main</a>(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;{</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;    cl_context context = 0;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    cl_command_queue commandQueue = 0;</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    cl_program program = 0;</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;    cl_device_id device = 0;</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    cl_kernel kernel = 0;</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    <span class="keywordtype">int</span> numberOfMemoryObjects = 3;</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    cl_mem memoryObjects[3] = {0, 0, 0};</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    cl_int errorNumber;</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    <span class="keywordflow">if</span> (!<a class="code" href="common_8cpp.html#a6fc67d121370b02ac8bff71ec00a7665" title="Create an OpenCL context on a GPU on the first available platform.">createContext</a>(&amp;context))</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    {</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;        <a class="code" href="common_8cpp.html#acd459e74d0cef3c4616c7ce1a5a47f4d" title="Release any OpenCL objects that have been created.">cleanUpOpenCL</a>(context, commandQueue, program, kernel, memoryObjects, numberOfMemoryObjects);</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;Failed to create an OpenCL context. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;        <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    }</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    <span class="keywordflow">if</span> (!<a class="code" href="common_8cpp.html#a30ee399cc6a4b82d46c581f037b447fa" title="Create an OpenCL command queue for a given context.">createCommandQueue</a>(context, &amp;commandQueue, &amp;device))</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    {</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;        <a class="code" href="common_8cpp.html#acd459e74d0cef3c4616c7ce1a5a47f4d" title="Release any OpenCL objects that have been created.">cleanUpOpenCL</a>(context, commandQueue, program, kernel, memoryObjects, numberOfMemoryObjects);</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;Failed to create the OpenCL command queue. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;        <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    }</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    <span class="keywordflow">if</span> (!<a class="code" href="common_8cpp.html#a4feec45e4b990aad8e40cc3faa32a9c8">createProgram</a>(context, device, <span class="stringliteral">&quot;assets/hello_world_vector.cl&quot;</span>, &amp;program))</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    {</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;        <a class="code" href="common_8cpp.html#acd459e74d0cef3c4616c7ce1a5a47f4d" title="Release any OpenCL objects that have been created.">cleanUpOpenCL</a>(context, commandQueue, program, kernel, memoryObjects, numberOfMemoryObjects);</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;Failed to create OpenCL program.&quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;        <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    }</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    kernel = clCreateKernel(program, <span class="stringliteral">&quot;hello_world_vector&quot;</span>, &amp;errorNumber);</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    <span class="keywordflow">if</span> (!<a class="code" href="common_8cpp.html#a73727ed6f5d821d8c97756404e145644" title="Check an OpenCL error number for errors.">checkSuccess</a>(errorNumber))</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    {</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;        <a class="code" href="common_8cpp.html#acd459e74d0cef3c4616c7ce1a5a47f4d" title="Release any OpenCL objects that have been created.">cleanUpOpenCL</a>(context, commandQueue, program, kernel, memoryObjects, numberOfMemoryObjects);</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;Failed to create OpenCL kernel. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;        <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    }</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    <span class="comment">/* [Query preferred vector width] */</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="comment">     * Query the device to find out it&#39;s prefered integer vector width.</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="comment">     * Although we are only printing the value here, it can be used to select between</span></div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="comment">     * different versions of a kernel.</span></div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    cl_uint integerVectorWidth;</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    clGetDeviceInfo(device, CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT, <span class="keyword">sizeof</span>(cl_uint), &amp;integerVectorWidth, NULL);</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    cout &lt;&lt; <span class="stringliteral">&quot;Prefered vector width for integers: &quot;</span> &lt;&lt; integerVectorWidth &lt;&lt; endl;</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    <span class="comment">/* [Query preferred vector width] */</span></div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    <span class="comment">/* Number of elements in the arrays of input and output data. */</span></div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    cl_int arraySize = 1000000;</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    <span class="comment">/* The buffers are the size of the arrays. */</span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    <span class="keywordtype">size_t</span> bufferSize = arraySize * <span class="keyword">sizeof</span>(cl_int);</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="comment">     * Ask the OpenCL implementation to allocate buffers for the data.</span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="comment">     * We ask the OpenCL implemenation to allocate memory rather than allocating</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="comment">     * it on the CPU to avoid having to copy the data later.</span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="comment">     * The read/write flags relate to accesses to the memory from within the kernel.</span></div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    <span class="keywordtype">bool</span> createMemoryObjectsSuccess = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;    <span class="comment">/* [Create buffer] */</span></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;    memoryObjects[0] = clCreateBuffer(context, CL_MEM_READ_ONLY | CL_MEM_ALLOC_HOST_PTR, bufferSize, NULL, &amp;errorNumber);</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    createMemoryObjectsSuccess &amp;= <a class="code" href="common_8cpp.html#a73727ed6f5d821d8c97756404e145644" title="Check an OpenCL error number for errors.">checkSuccess</a>(errorNumber);</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    memoryObjects[1] = clCreateBuffer(context, CL_MEM_READ_ONLY | CL_MEM_ALLOC_HOST_PTR, bufferSize, NULL, &amp;errorNumber);</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    createMemoryObjectsSuccess &amp;= <a class="code" href="common_8cpp.html#a73727ed6f5d821d8c97756404e145644" title="Check an OpenCL error number for errors.">checkSuccess</a>(errorNumber);</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    memoryObjects[2] = clCreateBuffer(context, CL_MEM_WRITE_ONLY | CL_MEM_ALLOC_HOST_PTR, bufferSize, NULL, &amp;errorNumber);</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    createMemoryObjectsSuccess &amp;= <a class="code" href="common_8cpp.html#a73727ed6f5d821d8c97756404e145644" title="Check an OpenCL error number for errors.">checkSuccess</a>(errorNumber);</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;    <span class="comment">/* [Create buffer] */</span></div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;    <span class="keywordflow">if</span> (!createMemoryObjectsSuccess)</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    {</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;        <a class="code" href="common_8cpp.html#acd459e74d0cef3c4616c7ce1a5a47f4d" title="Release any OpenCL objects that have been created.">cleanUpOpenCL</a>(context, commandQueue, program, kernel, memoryObjects, numberOfMemoryObjects);</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;Failed to create OpenCL buffer. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;        <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;    }</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;    <span class="comment">/* Map the memory buffers created by the OpenCL implementation to pointers so we can access them on the CPU. */</span></div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;    <span class="keywordtype">bool</span> mapMemoryObjectsSuccess = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;    <span class="comment">/* [Map buffer] */</span></div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    cl_int* inputA = (cl_int*)clEnqueueMapBuffer(commandQueue, memoryObjects[0], CL_TRUE, CL_MAP_WRITE, 0, bufferSize, 0, NULL, NULL, &amp;errorNumber);</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;    mapMemoryObjectsSuccess &amp;= <a class="code" href="common_8cpp.html#a73727ed6f5d821d8c97756404e145644" title="Check an OpenCL error number for errors.">checkSuccess</a>(errorNumber);</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    cl_int* inputB = (cl_int*)clEnqueueMapBuffer(commandQueue, memoryObjects[1], CL_TRUE, CL_MAP_WRITE, 0, bufferSize, 0, NULL, NULL, &amp;errorNumber);</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    mapMemoryObjectsSuccess &amp;= <a class="code" href="common_8cpp.html#a73727ed6f5d821d8c97756404e145644" title="Check an OpenCL error number for errors.">checkSuccess</a>(errorNumber);</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    <span class="comment">/* [Map buffer] */</span></div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;    <span class="keywordflow">if</span> (!mapMemoryObjectsSuccess)</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;    {</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;       <a class="code" href="common_8cpp.html#acd459e74d0cef3c4616c7ce1a5a47f4d" title="Release any OpenCL objects that have been created.">cleanUpOpenCL</a>(context, commandQueue, program, kernel, memoryObjects, numberOfMemoryObjects);</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;       cerr &lt;&lt; <span class="stringliteral">&quot;Failed to map buffer. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;       <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;    }</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    <span class="comment">/* [Initialize the input data] */</span></div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; arraySize; i++)</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;    {</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;       inputA[i] = i;</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;       inputB[i] = i;</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    }</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    <span class="comment">/* [Initialize the input data] */</span></div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;<span class="comment">     * Unmap the memory objects as we are finished using them from the CPU side.</span></div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;<span class="comment">     * We unmap the memory because otherwise:</span></div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;<span class="comment">     * - reads and writes to that memory from inside a kernel on the OpenCL side are undefined,</span></div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;<span class="comment">     * - the OpenCL implementation cannot free the memory when it is finished.</span></div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;    <span class="comment">/* [Un-map buffer] */</span></div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;    <span class="keywordflow">if</span> (!<a class="code" href="common_8cpp.html#a73727ed6f5d821d8c97756404e145644" title="Check an OpenCL error number for errors.">checkSuccess</a>(clEnqueueUnmapMemObject(commandQueue, memoryObjects[0], inputA, 0, NULL, NULL)))</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    {</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;       <a class="code" href="common_8cpp.html#acd459e74d0cef3c4616c7ce1a5a47f4d" title="Release any OpenCL objects that have been created.">cleanUpOpenCL</a>(context, commandQueue, program, kernel, memoryObjects, numberOfMemoryObjects);</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;       cerr &lt;&lt; <span class="stringliteral">&quot;Unmapping memory objects failed &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;       <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;    }</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;    <span class="keywordflow">if</span> (!<a class="code" href="common_8cpp.html#a73727ed6f5d821d8c97756404e145644" title="Check an OpenCL error number for errors.">checkSuccess</a>(clEnqueueUnmapMemObject(commandQueue, memoryObjects[1], inputB, 0, NULL, NULL)))</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;    {</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;       <a class="code" href="common_8cpp.html#acd459e74d0cef3c4616c7ce1a5a47f4d" title="Release any OpenCL objects that have been created.">cleanUpOpenCL</a>(context, commandQueue, program, kernel, memoryObjects, numberOfMemoryObjects);</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;       cerr &lt;&lt; <span class="stringliteral">&quot;Unmapping memory objects failed &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;       <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;    }</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;    <span class="comment">/* [Un-map buffer] */</span></div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    <span class="comment">/* Set the kernel arguments. */</span></div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;    <span class="keywordtype">bool</span> setKernelArgumentsSuccess = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;    setKernelArgumentsSuccess &amp;= <a class="code" href="common_8cpp.html#a73727ed6f5d821d8c97756404e145644" title="Check an OpenCL error number for errors.">checkSuccess</a>(clSetKernelArg(kernel, 0, <span class="keyword">sizeof</span>(cl_mem), &amp;memoryObjects[0]));</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;    setKernelArgumentsSuccess &amp;= <a class="code" href="common_8cpp.html#a73727ed6f5d821d8c97756404e145644" title="Check an OpenCL error number for errors.">checkSuccess</a>(clSetKernelArg(kernel, 1, <span class="keyword">sizeof</span>(cl_mem), &amp;memoryObjects[1]));</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;    setKernelArgumentsSuccess &amp;= <a class="code" href="common_8cpp.html#a73727ed6f5d821d8c97756404e145644" title="Check an OpenCL error number for errors.">checkSuccess</a>(clSetKernelArg(kernel, 2, <span class="keyword">sizeof</span>(cl_mem), &amp;memoryObjects[2]));</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    <span class="keywordflow">if</span> (!setKernelArgumentsSuccess)</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    {</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;        <a class="code" href="common_8cpp.html#acd459e74d0cef3c4616c7ce1a5a47f4d" title="Release any OpenCL objects that have been created.">cleanUpOpenCL</a>(context, commandQueue, program, kernel, memoryObjects, numberOfMemoryObjects);</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;Failed setting OpenCL kernel arguments. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;        <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;    }</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;    <span class="comment">/* An event to associate with the Kernel. Allows us to retreive profiling information later. */</span></div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    cl_event <span class="keyword">event</span> = 0;</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;    <span class="comment">/* [Global work size] */</span></div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;<span class="comment">     * Each instance of our OpenCL kernel now operates on 4 elements of each array so the number of</span></div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;<span class="comment">     * instances needed is the number of elements in the array divided by 4.</span></div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    <span class="keywordtype">size_t</span> globalWorksize[1] = {arraySize / 4};</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;    <span class="comment">/* Enqueue the kernel */</span></div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;    <span class="keywordflow">if</span> (!<a class="code" href="common_8cpp.html#a73727ed6f5d821d8c97756404e145644" title="Check an OpenCL error number for errors.">checkSuccess</a>(clEnqueueNDRangeKernel(commandQueue, kernel, 1, NULL, globalWorksize, NULL, 0, NULL, &amp;event)))</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;    {</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;        <a class="code" href="common_8cpp.html#acd459e74d0cef3c4616c7ce1a5a47f4d" title="Release any OpenCL objects that have been created.">cleanUpOpenCL</a>(context, commandQueue, program, kernel, memoryObjects, numberOfMemoryObjects);</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;Failed enqueuing the kernel. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;        <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;    }</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    <span class="comment">/* [Global work size] */</span></div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    <span class="comment">/* Wait for kernel execution completion. */</span></div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;    <span class="keywordflow">if</span> (!<a class="code" href="common_8cpp.html#a73727ed6f5d821d8c97756404e145644" title="Check an OpenCL error number for errors.">checkSuccess</a>(clFinish(commandQueue)))</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;    {</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;        <a class="code" href="common_8cpp.html#acd459e74d0cef3c4616c7ce1a5a47f4d" title="Release any OpenCL objects that have been created.">cleanUpOpenCL</a>(context, commandQueue, program, kernel, memoryObjects, numberOfMemoryObjects);</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;Failed waiting for kernel execution to finish. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;        <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;    }</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;    <span class="comment">/* Print the profiling information for the event. */</span></div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;    <a class="code" href="common_8cpp.html#a33ff0013574626bb47147495e02b5d08" title="Print the profiling information associated with an OpenCL event.">printProfilingInfo</a>(event);</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;    <span class="comment">/* Release the event object. */</span></div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;    <span class="keywordflow">if</span> (!<a class="code" href="common_8cpp.html#a73727ed6f5d821d8c97756404e145644" title="Check an OpenCL error number for errors.">checkSuccess</a>(clReleaseEvent(event)))</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;    {</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;       <a class="code" href="common_8cpp.html#acd459e74d0cef3c4616c7ce1a5a47f4d" title="Release any OpenCL objects that have been created.">cleanUpOpenCL</a>(context, commandQueue, program, kernel, memoryObjects, numberOfMemoryObjects);</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;       cerr &lt;&lt; <span class="stringliteral">&quot;Failed releasing the event object. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;       <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;    }</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;    <span class="comment">/* Get a pointer to the output data. */</span></div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;    cl_int* output = (cl_int*)clEnqueueMapBuffer(commandQueue, memoryObjects[2], CL_TRUE, CL_MAP_READ, 0, bufferSize, 0, NULL, NULL, &amp;errorNumber);</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;    <span class="keywordflow">if</span> (!<a class="code" href="common_8cpp.html#a73727ed6f5d821d8c97756404e145644" title="Check an OpenCL error number for errors.">checkSuccess</a>(errorNumber))</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;    {</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;       <a class="code" href="common_8cpp.html#acd459e74d0cef3c4616c7ce1a5a47f4d" title="Release any OpenCL objects that have been created.">cleanUpOpenCL</a>(context, commandQueue, program, kernel, memoryObjects, numberOfMemoryObjects);</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;       cerr &lt;&lt; <span class="stringliteral">&quot;Failed to map buffer. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;       <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;    }</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;    <span class="comment">/* Uncomment the following block to print results. */</span></div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;<span class="comment">    for (int i = 0; i &lt; arraySize; i++)</span></div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;<span class="comment">    {</span></div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;<span class="comment">        cout &lt;&lt; &quot;i = &quot; &lt;&lt; i &lt;&lt; &quot;, output = &quot; &lt;&lt;  output[i] &lt;&lt; &quot;\n&quot;;</span></div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;<span class="comment">    }</span></div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;    <span class="comment">/* Unmap the memory object as we are finished using them from the CPU side. */</span></div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    <span class="keywordflow">if</span> (!<a class="code" href="common_8cpp.html#a73727ed6f5d821d8c97756404e145644" title="Check an OpenCL error number for errors.">checkSuccess</a>(clEnqueueUnmapMemObject(commandQueue, memoryObjects[2], output, 0, NULL, NULL)))</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;    {</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;       <a class="code" href="common_8cpp.html#acd459e74d0cef3c4616c7ce1a5a47f4d" title="Release any OpenCL objects that have been created.">cleanUpOpenCL</a>(context, commandQueue, program, kernel, memoryObjects, numberOfMemoryObjects);</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;       cerr &lt;&lt; <span class="stringliteral">&quot;Unmapping memory objects failed &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;       <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;    }</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;    <span class="comment">/* Release OpenCL objects. */</span></div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;    <a class="code" href="common_8cpp.html#acd459e74d0cef3c4616c7ce1a5a47f4d" title="Release any OpenCL objects that have been created.">cleanUpOpenCL</a>(context, commandQueue, program, kernel, memoryObjects, numberOfMemoryObjects);</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;}</div>
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